I do work like that, though you might also want to check your local tailoring/dressmaking businesses for quotes on stuff.

Bear in mind how much you are prepared to spend, as custom work isn't cheap. I mean, yes, I can and will create a frock that is just a fraction of what you'd pay for a Prada or Chanel, but I can't undercut Old Navy. The same will be true for pretty much anyone else who does this kind of work.

I think custom is an excellent option for people who want unique clothing and have an appreciation for craftsmanship, but don't necessarily like couture or have the budget for it.

Feel free to ask me more specific questions, and I'll answer them to the best of my ability. Also, you might want to check out this thread, also about custom clothing which has some information you might find useful and interesting.